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	Author = {王新敏 and 王海林},
	Date-Added = {2013-02-26 08:57:26 +0000},
	Date-Modified = {2013-02-26 08:58:55 +0000},
	Journal = {铁道建筑技术},
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@article{ref3,
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	Date-Added = {2013-02-26 08:46:06 +0000},
	Date-Modified = {2013-02-26 08:59:29 +0000},
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@article{ref1,
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	Date-Added = {2013-02-26 08:41:41 +0000},
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	Date-Added = {2013-02-26 08:38:28 +0000},
	Date-Modified = {2013-02-26 08:59:25 +0000},
	Doi = {10.1137/S0097539705447256},
	Eprint = {http://epubs.siam.org/doi/pdf/10.1137/S0097539705447256},
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	Bdsk-Url-1 = {http://epubs.siam.org/doi/abs/10.1137/S0097539705447256},
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@book{latex2e,
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	Date-Added = {2013-02-26 08:06:58 +0000},
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